Structural characteristics and maintenance of garbage screening Trommel Screen

Trommel Screen is an efficient screening equipment widely used in industries such as mining, coal and waste treatment. It uses a rotating screen to grade and screen materials, separating them into different particle size grades through screens of different apertures. The Trommel Screen has the characteristics of simple structure, smooth operation, low noise, and easy maintenance. At the same time, it can effectively prevent screen hole blockage and improve screening efficiency. In addition, the Trommel Screen has strong adaptability and can handle various types of materials to meet different production process requirements. Therefore, Trommel Screens play an important role in solid waste pretreatment and resource recovery.

1. Introduction to Trommel Screening equipment

Trommel Screen is a widely used equipment for garbage classification and screening, which achieves effective separation of various solid wastes through its unique rotating cylindrical structure. Roller screen is usually composed of one or more rollers, each of which is equipped with different specifications of mesh screens inside. Through different combinations, different screening effects can be achieved. Roller screen plays an important role in garbage classification, construction waste treatment, household waste treatment, and agricultural waste treatment, and is an important tool for modern environmental protection and resource recycling.

There are various types of Trommel Screens, such as metal mesh screens, plastic mesh screens, shaftless Trommel Screens, etc. Each type has its specific application scenarios and advantages. Metal mesh screens are widely used in scenarios involving high loads and complex materials due to their excellent screening performance and durability; Plastic mesh screens, on the other hand, are suitable for situations where high screening accuracy is not required due to their lightweight and price advantages. The shaftless Trommel Screen is particularly suitable for handling sticky and wet materials due to its simple structure and easy maintenance.

2. Working principle and process

The working principle of the Trommel Screen is mainly based on the motion trajectory of the materials inside the drum to achieve screening and separation. When the garbage is transported to the interior of the Trommel Screen, the drum begins to rotate, and the garbage is subjected to rotation and gravity inside the drum, constantly rolling, sliding, and colliding. The mesh inside the drum has different sizes of aperture, and the material will be separated by the mesh according to its size and shape during the rolling process. Larger materials cannot pass through the mesh and are directly discharged from one end of the drum; And smaller particles pass through the sieve and fall into the collection device below.

The workflow of a Trommel Screen generally includes the following steps:

a. Material input: Garbage or other solid waste is fed into the inlet of the Trommel Screen.

b. Drum rotation: The motor drives the drum device to rotate around its axis through a coupling, and the material begins to roll inside the drum.

c. Screening process: The material is flipped and rolled inside the drum, and screened through screens with different aperture sizes.

d. Material discharge: Qualified materials (undersized products) fall into the collection device below through the sieve, while unqualified materials (undersized products) are directly discharged from one end of the drum.

e. Sieve cleaning: The material stuck in the sieve is ejected through the rotation and collision of the drum to prevent the sieve from clogging.

3. Main Structure and Characteristics

The Trommel Screen is mainly composed of a motor, a reducer, a drum device, a frame, a screen mesh, and an inlet and outlet. The drum device is installed obliquely on the frame, and the motor is connected to the drum device through a reducer to drive the drum to rotate around its axis. The structural design of the Trommel Screen has the following characteristics:

a. Screen structure design: The screen of the Trommel Screen adopts a special design, which can effectively prevent the blockage of the screen holes and maintain efficient operation even when dealing with garbage with high moisture content.

b. Rotation and Tilt Design: The rotation and tilt angles of the drum have been optimized to ensure that the garbage can fully contact the sieve during the screening process, thereby improving screening efficiency.

c. Self cleaning mechanism: The Trommel Screen is designed with a self-cleaning mechanism inside, which effectively reduces the frequency and difficulty of equipment maintenance and extends the service life of the equipment through the self vibration of the screen mesh and high-pressure water pipe flushing.

d. Environmentally friendly closed design: The screening cylinder can be designed as a closed structure, combined with an efficient dust removal system, effectively controlling dust leakage and meeting environmental requirements.

4. Application Fields and Examples

Trommel Screens have a wide range of applications in various fields, including construction waste treatment, household waste treatment, agricultural waste treatment, etc. Here are some specific application examples:

a. Construction waste treatment: In construction waste treatment, Trommel Screens can effectively separate fine materials that can be used for brick making or landfill. For example, on construction sites, Trommel Screens can quickly classify waste materials such as concrete and bricks for subsequent processing or reuse.

b. Household waste treatment: In household waste treatment, Trommel Screens are used to separate organic matter from other types of waste, providing convenience for subsequent resource recycling or harmless treatment. Organic materials, plastics, metals, and glass can be effectively separated.

c. Agricultural waste treatment: In agricultural waste treatment, Trommel Screens can be used to screen out organic components that can be used for fertilizer production. Agricultural waste can be screened through a Trommel Screen to obtain organic fertilizer raw materials with different particle sizes.

5. Analysis of Equipment Advantages

The Trommel Screen has obvious advantages in garbage classification and resource recycling, which are manifested in the following aspects:

a. Efficient separation: The design of the Trommel Screen allows materials to be fully dispersed during rotation, improving separation efficiency. By adjusting the size of the sieve, it is possible to flexibly adapt to the screening needs of various materials.

b. Strong durability: The Trommel Screen is made of sturdy materials and has a long service life, suitable for working in harsh environments. Mesh materials are generally divided into two types: metal mesh and plastic mesh. Metal mesh has a better screening effect, although it is more prone to wear and tear, it has higher overall durability.

c. Easy to maintain: The structural design of the Trommel Screen is easy to maintain and repair, and the modular design makes it simple and fast to replace worn parts, reducing downtime.

d. Strong adaptability: The Trommel Screen can be customized according to the characteristics of different materials, suitable for screening various solid wastes. At the same time, the design of the screen mesh can effectively prevent blockage, improving the output and reliability of the screening system.

6. Development of Intelligence and Environmental Protection

With the advancement of technology and increasingly strict environmental regulations, Trommel Screens are also developing towards a more intelligent and efficient direction. The intelligent Trommel Screen, through integrated sensor technology, can monitor material status in real time, automatically adjust operating parameters, and improve screening accuracy. At the same time, Trommel Screens using new materials and processes pay more attention to energy conservation and emission reduction, striving to improve production efficiency while reducing environmental impact.

a. Real time monitoring: Through sensor technology, real-time monitoring of material status, including material flow rate, humidity, particle size, etc., ensures the stability and accuracy of the screening process.

b. Automatic adjustment: Based on real-time monitoring data, the intelligent Trommel Screen can automatically adjust operating parameters such as vibration frequency, rotation speed, etc. to achieve the best screening effect.

c. Energy conservation and emission reduction: The use of new materials and processes in the design and manufacturing of Trommel Screens places greater emphasis on energy conservation and emission reduction, reducing energy consumption and environmental pollution.

7. Actual operation and maintenance

A. In practical operation, the Trommel Screen needs to pay attention to the following points:

a. Pre start inspection: Before starting the Trommel Screen, it is necessary to carefully check whether each component is installed correctly, whether the fasteners are secure, and whether there are any obstacles around the screen body that hinder the operation of the Trommel Screen.

b. Empty load test: Before putting materials into use, an empty load test should be conducted to check whether the motor direction is correct, whether the equipment runs smoothly, and whether there are any abnormal noises.

c. Feeding operation: With the screening machine running smoothly, start the feeding and discharging equipment and conduct a feeding test run. After feeding, the sealed isolation cover should be closed to prevent dust leakage.

d. Operation inspection: During the work process, the operation should be regularly checked. If abnormal operation or abnormal noise is found, the machine should be stopped in time for inspection, the cause should be identified, and the fault should be eliminated.

B. The maintenance of Trommel Screen mainly includes the following aspects:

a. Regular inspection: Regularly inspect all components of the Trommel Screen, including fasteners, bearings, mesh screens, etc., to ensure the normal operation of the equipment.

b. Lubrication and maintenance: Regularly lubricate and maintain the bearing seat and gearbox, add an appropriate amount of lubricating grease to prevent equipment damage caused by poor lubrication.

c. Screen cleaning: Regularly clean the screen to prevent clogging of the sieve holes and improve screening efficiency.

d. Equipment maintenance: Regularly inspect the equipment, replace worn parts, and ensure long-term stable operation of the equipment.

Through the above operation and maintenance measures, the efficient and stable operation of the Trommel Screen can be ensured, the service life of the equipment can be extended, and the efficiency of garbage screening and resource recycling can be improved.

This article comprehensively introduces various aspects of the garbage screening Trommel Screen, from equipment introduction to working principle, main structure and characteristics, application fields and examples, equipment advantage analysis, intelligent and environmental development, as well as practical operation and maintenance, aiming to provide readers with a comprehensive and in-depth understanding. As an efficient and environmentally friendly equipment for garbage classification and resource recycling, Trommel Screens will play a more important role in future urban construction and management. With the advancement of technology and the improvement of people's environmental awareness, the application of Trommel Screens will become more widespread, contributing to the achievement of sustainable development goals.

Author : Serena Chang

Serena Chang is the writer of blog and news column. With more than 10 years of working experience in the machinery industry, she has a comprehensive understanding of environmental protection machinery and is willing to share useful knowledge of environmental protection machinery.